US 12,404,404 B2
Polyimide resin composition and molded body
Atsushi Sakai, Kanagawa (JP); and Yuuki Sato, Kanagawa (JP)
Assigned to MITSUBISHI GAS CHEMICAL COMPANY, INC., Chiyoda-ku (JP)
Appl. No. 17/785,673
Filed by MITSUBISHI GAS CHEMICAL COMPANY, INC., Chiyoda-ku (JP)
PCT Filed Nov. 30, 2020, PCT No. PCT/JP2020/044407
§ 371(c)(1), (2) Date Jun. 15, 2022,
PCT Pub. No. WO2021/131501, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-232103 (JP), filed on Dec. 23, 2019.
Prior Publication US 2023/0076244 A1, Mar. 9, 2023
Int. Cl. C08L 79/08 (2006.01); C08L 81/10 (2006.01)
CPC C08L 79/08 (2013.01) [C08L 81/10 (2013.01)] 18 Claims
 
1. A polyimide resin composition comprising a crystalline thermoplastic polyimide resin (A) and a polyetherimide sulfone resin (B), wherein
the polyimide resin (A) comprises a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), and
a content ratio of the repeating structural unit of the formula (1) with respect to the total of the repeating structural unit of the formula (1) and the repeating structural unit of the formula (2) is from 20 to 70 mol %:

OG Complex Work Unit Chemistry
wherein R1 represents a divalent group having from 6 to 22 carbon atoms containing at least one alicyclic hydrocarbon structure; R2 represents a divalent chain aliphatic group having from 5 to 16 carbon atoms; and X1 and X2 each independently represent a tetravalent group having from 6 to 22 carbon atoms containing at least one aromatic ring, and
wherein a mass ratio of the polyimide resin (A) to the polyetherimide sulfone resin (B), [(A)/(B)], is from 1/99 to 25/75.